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<head><meta charset="utf-8"><title>weekly meeting 2019-05-23 #54818 · t-compiler · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/index.html">t-compiler</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html">weekly meeting 2019-05-23 #54818</a></h3>

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<a name="166353862"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166353862" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166353862">(May 23 2019 at 12:03)</a>:</h4>
<p>Hi <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span> ; the triage meeting will be starting in a little less than two hours. (For some reason the google calendar lost the recurring meeting; either I or niko will try to look into that.) I'll be doing <a href="#narrow/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-05-23.20.2354818/near/166353770" title="#narrow/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-05-23.20.2354818/near/166353770">pre-triage</a> in a parallel topic in the meantime.</p>



<a name="166353940"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166353940" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166353940">(May 23 2019 at 12:04)</a>:</h4>
<p>The <a href="https://github.com/rust-lang/compiler-team/blob/master/about/triage-meeting.md#working-group-check-in" target="_blank" title="https://github.com/rust-lang/compiler-team/blob/master/about/triage-meeting.md#working-group-check-in">WG checkin page</a> needs to be updated with more planned meetings, but I'll wing it for now.</p>



<a name="166353983"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166353983" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166353983">(May 23 2019 at 12:05)</a>:</h4>
<p>(I guess <a href="https://github.com/rust-lang/compiler-team/pull/67" target="_blank" title="https://github.com/rust-lang/compiler-team/pull/67">compiler-team PR #67</a> is relevant here...)</p>



<a name="166354291"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166354291" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166354291">(May 23 2019 at 12:09)</a>:</h4>
<p>(added some entries)</p>



<a name="166354355"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166354355" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166354355">(May 23 2019 at 12:10)</a>:</h4>
<p><span aria-label="question" class="emoji emoji-2753" role="img" title="question">:question:</span>  <span class="user-mention" data-user-id="124287">@mw</span> want to have another go this week at doing a checkin from WG-pgo?</p>



<a name="166354371"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166354371" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166354371">(May 23 2019 at 12:10)</a>:</h4>
<p><span aria-label="question" class="emoji emoji-2753" role="img" title="question">:question:</span>  <span class="user-mention" data-user-id="116009">@nikomatsakis</span> would you be able to represent <span class="user-group-mention" data-user-group-id="692">@WG-traits</span> for a checkin on that front?</p>



<a name="166360527"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166360527" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166360527">(May 23 2019 at 13:32)</a>:</h4>
<p><span aria-label="note" class="emoji emoji-1f4dd" role="img" title="note">:note:</span> I have closed "Borrow checker on beta rejects code accepted on stable." <a href="https://github.com/rust-lang/rust/issues/60927" target="_blank" title="https://github.com/rust-lang/rust/issues/60927">#60927</a> as "expected, acceptable <code>[breaking-change]</code>fallout from a soundness fix." <span class="user-mention" data-user-id="126931">@centril</span> has independently decided not to add mention of this to the relnotes/blog.</p>



<a name="166360698"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166360698" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166360698">(May 23 2019 at 13:34)</a>:</h4>
<p><span aria-label="exclamation" class="emoji emoji-2757" role="img" title="exclamation">:exclamation:</span> We'll be talking about "ICE with incorrect turbofish" <a href="https://github.com/rust-lang/rust/issues/60989" target="_blank" title="https://github.com/rust-lang/rust/issues/60989">#60989</a> during the meeting, but if someone has time <em>right now</em> (as in, next few hours0 to try to make a backportable fix, we might be able to get it into the release.</p>



<a name="166361911"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166361911" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166361911">(May 23 2019 at 13:48)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> yes, I can do that</p>



<a name="166363210"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363210" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363210">(May 23 2019 at 14:02)</a>:</h4>
<p>Okay, hi <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span> , lets get this started</p>



<a name="166363273"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363273" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363273">(May 23 2019 at 14:03)</a>:</h4>
<p>we have <em>ten</em> <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+is%3Aissue+label%3AT-compiler+label%3AP-high+no%3Aassignee" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+is%3Aissue+label%3AT-compiler+label%3AP-high+no%3Aassignee">unassigned P-high issues</a></p>



<a name="166363289"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363289" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363289">(May 23 2019 at 14:03)</a>:</h4>
<p>three of them are nominated for discussion (so I'll wait to talk about them later)</p>



<a name="166363343"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363343" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363343">(May 23 2019 at 14:04)</a>:</h4>
<p>six of the rest are ICE's</p>



<a name="166363362"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363362" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363362">(May 23 2019 at 14:04)</a>:</h4>
<p>and then there's this last one: "llvm lint: "Undefined behavior: Call argument type mismatches callee parameter type" with mixing debug and release" <a href="https://github.com/rust-lang/rust/issues/48310" target="_blank" title="https://github.com/rust-lang/rust/issues/48310">#48310</a></p>



<a name="166363381"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363381" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363381">(May 23 2019 at 14:05)</a>:</h4>
<p>Let's deal with <a href="https://github.com/rust-lang/rust/issues/60989" target="_blank" title="https://github.com/rust-lang/rust/issues/60989">https://github.com/rust-lang/rust/issues/60989</a> first of the nominated issues?</p>



<a name="166363398"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363398" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363398">(May 23 2019 at 14:05)</a>:</h4>
<p>its nominated</p>



<a name="166363500"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363500" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363500">(May 23 2019 at 14:06)</a>:</h4>
<p>regarding <a href="https://github.com/rust-lang/rust/issues/48310" target="_blank" title="https://github.com/rust-lang/rust/issues/48310">#48310</a>, we need to resolve whether it is indeed an LLVM bug, and if so, file a bug against LLVM.</p>



<a name="166363515"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363515" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> varkor <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363515">(May 23 2019 at 14:06)</a>:</h4>
<p>(I can look into <a href="https://github.com/rust-lang/rust/issues/60989" target="_blank" title="https://github.com/rust-lang/rust/issues/60989">#60989</a> tonight)</p>



<a name="166363517"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363517" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363517">(May 23 2019 at 14:06)</a>:</h4>
<p>I don't know whom of the people present is most adept at such. Feel free to raise your hand and/or assign yourself.</p>



<a name="166363526"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363526" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363526">(May 23 2019 at 14:06)</a>:</h4>
<p>I just realized, I should have waited for start the P-high stuff</p>



<a name="166363533"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363533" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363533">(May 23 2019 at 14:06)</a>:</h4>
<p>And give people a few minutes for announcements</p>



<a name="166363545"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363545" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363545">(May 23 2019 at 14:06)</a>:</h4>
<p><span class="user-mention" data-user-id="121053">@varkor</span>  if you can look at it right after the meeting that would be optimal <span aria-label="slight smile" class="emoji emoji-1f642" role="img" title="slight smile">:slight_smile:</span> -- it's blocking 1.35.0 release atm</p>



<a name="166363558"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363558" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363558">(May 23 2019 at 14:07)</a>:</h4>
<p>So: Any announcements beyond the ones I posted up above?</p>



<a name="166363720"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363720" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363720">(May 23 2019 at 14:08)</a>:</h4>
<blockquote>
<p>So: Any announcements beyond the ones I posted up above?</p>
</blockquote>
<p>looks like the answer there is "no"</p>



<a name="166363741"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363741" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> varkor <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363741">(May 23 2019 at 14:09)</a>:</h4>
<p><span class="user-mention" data-user-id="126931">@centril</span>: I'm not at my computer, and won't be for several hours, so unfortunately I can't look at it immediately — if anyone else can look at it sooner, you're welcome to</p>



<a name="166363753"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363753" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363753">(May 23 2019 at 14:09)</a>:</h4>
<p>okay, so lets look first at the <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+is%3Aissue+label%3AT-compiler+label%3AP-high+label%3AI-nominated" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+is%3Aissue+label%3AT-compiler+label%3AP-high+label%3AI-nominated">P-high nominated issues</a></p>



<a name="166363778"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363778" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363778">(May 23 2019 at 14:09)</a>:</h4>
<p>first up, as you can see from ongoing dialogue, is: "ICE with incorrect turbofish <a href="https://github.com/rust-lang/rust/issues/60989" target="_blank" title="https://github.com/rust-lang/rust/issues/60989">#60989</a></p>



<a name="166363779"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363779" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> oli <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363779">(May 23 2019 at 14:09)</a>:</h4>
<p><span class="user-mention" data-user-id="121053">@varkor</span> I'm currently looking into it, but am pretty stumped</p>



<a name="166363938"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363938" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363938">(May 23 2019 at 14:10)</a>:</h4>
<p>ok, so if we can get a PR r+ed in an hour or two we can include it in 1.35.0</p>



<a name="166363963"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363963" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363963">(May 23 2019 at 14:11)</a>:</h4>
<p>lets discuss briefly what happens if we <em>don't</em> have a PR in the next two hours</p>



<a name="166363987"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363987" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363987">(May 23 2019 at 14:11)</a>:</h4>
<p>would this bug warrant delaying the release?</p>



<a name="166363994"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166363994" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166363994">(May 23 2019 at 14:11)</a>:</h4>
<p>I don't think this is bad enough to delay the release</p>



<a name="166364013"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364013" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364013">(May 23 2019 at 14:11)</a>:</h4>
<p>okay, any one want to argue the other side?</p>



<a name="166364067"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364067" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364067">(May 23 2019 at 14:12)</a>:</h4>
<p>it would be the first time we do that, and it's "just" an error-&gt;ICE, which is really bad for UX but it's not breaking any existing code</p>



<a name="166364103"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364103" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364103">(May 23 2019 at 14:12)</a>:</h4>
<p>if not, then we can just see how things go for the next few hours. (and if  a fix takes longer, we'll decide later whether to do a backport to stable, and likewise let T-release decide on whether a point release is warranted.)</p>



<a name="166364111"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364111" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364111">(May 23 2019 at 14:12)</a>:</h4>
<p>I think we can wait a bit more than 1-2 hours =P -- end of day maybe</p>



<a name="166364156"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364156" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> varkor <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364156">(May 23 2019 at 14:13)</a>:</h4>
<p>the original error isn't even visible, which is unfortunate</p>



<a name="166364163"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364163" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> varkor <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364163">(May 23 2019 at 14:13)</a>:</h4>
<p>it's an entirely unilluminating crash for users</p>



<a name="166364181"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364181" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364181">(May 23 2019 at 14:13)</a>:</h4>
<blockquote>
<p>I think we can wait a bit more than 1-2 hours =P -- end of day maybe</p>
</blockquote>
<p>understanding the actual time limits may be important</p>



<a name="166364190"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364190" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364190">(May 23 2019 at 14:13)</a>:</h4>
<p>for the people who are searching for a fix</p>



<a name="166364193"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364193" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364193">(May 23 2019 at 14:13)</a>:</h4>
<p>It does have a high chance of being hit by rls as it is reasonable looking code</p>



<a name="166364197"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364197" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364197">(May 23 2019 at 14:13)</a>:</h4>
<p>in terms of knowing at what point to <del>give up</del> stop sprinting</p>



<a name="166364204"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364204" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364204">(May 23 2019 at 14:13)</a>:</h4>
<p>That anyone could write during development</p>



<a name="166364271"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364271" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364271">(May 23 2019 at 14:14)</a>:</h4>
<p><span class="user-mention" data-user-id="121055">@Pietro Albini</span> can you provide some idea as to timeline here?</p>



<a name="166364275"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364275" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364275">(May 23 2019 at 14:14)</a>:</h4>
<p>it's always 4 hours from the PR being r+ed and the release coming out</p>



<a name="166364294"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364294" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364294">(May 23 2019 at 14:14)</a>:</h4>
<p>with 3 for the CI build and 1 for the release itself</p>



<a name="166364309"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364309" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364309">(May 23 2019 at 14:14)</a>:</h4>
<p><span class="user-mention" data-user-id="124288">@oli</span> I have a slight reduction for you: <a href="https://play.rust-lang.org/?version=beta&amp;mode=debug&amp;edition=2018&amp;gist=7ef6eb4016a801be15ff1df321094ef5" target="_blank" title="https://play.rust-lang.org/?version=beta&amp;mode=debug&amp;edition=2018&amp;gist=7ef6eb4016a801be15ff1df321094ef5">https://play.rust-lang.org/?version=beta&amp;mode=debug&amp;edition=2018&amp;gist=7ef6eb4016a801be15ff1df321094ef5</a> if that helps</p>



<a name="166364310"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364310" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364310">(May 23 2019 at 14:15)</a>:</h4>
<p>and release is supposed to come out at what time, relative to now?</p>



<a name="166364349"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364349" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364349">(May 23 2019 at 14:15)</a>:</h4>
<p>usually in two hours, but we don't say explicitly when</p>



<a name="166364369"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364369" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364369">(May 23 2019 at 14:15)</a>:</h4>
<p>so waiting until end of day for a fix <em>would</em> represent a (short) delay of the release?</p>



<a name="166364390"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364390" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364390">(May 23 2019 at 14:15)</a>:</h4>
<p>yeah, but it's not a big deal</p>



<a name="166364468"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364468" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364468">(May 23 2019 at 14:16)</a>:</h4>
<p>I won't be available after 21 UTC though, so unless we find someone else to run the release (alex?) the time limit is 17 UTC for the PR to be r+ed</p>



<a name="166364485"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364485" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364485">(May 23 2019 at 14:16)</a>:</h4>
<p>okay. I'll let <span class="user-mention" data-user-id="124288">@oli</span> <span class="user-mention" data-user-id="121053">@varkor</span> and <span class="user-mention" data-user-id="121055">@Pietro Albini</span> negotiate beyond this point, then.</p>



<a name="166364493"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364493" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364493">(May 23 2019 at 14:16)</a>:</h4>
<p>okay?</p>



<a name="166364506"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364506" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364506">(May 23 2019 at 14:16)</a>:</h4>
<p>ping <span class="user-mention" data-user-id="116015">@Alex Crichton</span>   on that ^</p>



<a name="166364526"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364526" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364526">(May 23 2019 at 14:17)</a>:</h4>
<p><span class="user-mention" data-user-id="124288">@oli</span> can I add you to assignee list (in addition to <span class="user-mention" data-user-id="121053">@varkor</span> ) on <a href="https://github.com/rust-lang/rust/issues/60989" target="_blank" title="https://github.com/rust-lang/rust/issues/60989">#60989</a> ?</p>



<a name="166364548"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364548" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364548">(May 23 2019 at 14:17)</a>:</h4>
<p>I think we've discussed enough that I can remove nomination label from <a href="https://github.com/rust-lang/rust/issues/60989" target="_blank" title="https://github.com/rust-lang/rust/issues/60989">#60989</a></p>



<a name="166364655"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364655" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364655">(May 23 2019 at 14:18)</a>:</h4>
<p>next nominated P-high issue: "[LLVM] Segmentation fault on MacOS with &gt; 1 codegen units and optimization &gt; 0" <a href="https://github.com/rust-lang/rust/issues/60925" target="_blank" title="https://github.com/rust-lang/rust/issues/60925">#60925</a></p>



<a name="166364666"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364666" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364666">(May 23 2019 at 14:19)</a>:</h4>
<p>this one is pretty awesome</p>



<a name="166364690"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364690" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364690">(May 23 2019 at 14:19)</a>:</h4>
<p>the going theory is that its caused by LLVM mishandling symbols that have <code>.llvm.</code> embedded in them.</p>



<a name="166364695"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364695" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364695">(May 23 2019 at 14:19)</a>:</h4>
<p>cc <span class="user-mention" data-user-id="119009">@eddyb</span> and <span class="user-mention" data-user-id="124287">@mw</span> ^</p>



<a name="166364701"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364701" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> oli <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364701">(May 23 2019 at 14:19)</a>:</h4>
<p>I added myself to <a href="https://github.com/rust-lang/rust/issues/60989" target="_blank" title="https://github.com/rust-lang/rust/issues/60989">#60989</a></p>



<a name="166364713"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364713" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364713">(May 23 2019 at 14:19)</a>:</h4>
<p>looks like a duplicate of <a href="https://github.com/rust-lang/rust/issues/53912" target="_blank" title="https://github.com/rust-lang/rust/issues/53912">https://github.com/rust-lang/rust/issues/53912</a></p>



<a name="166364738"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364738" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364738">(May 23 2019 at 14:19)</a>:</h4>
<p>yes, but that one got some workaround plugged in for it, according to the discussion?</p>



<a name="166364911"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364911" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364911">(May 23 2019 at 14:21)</a>:</h4>
<p>anyway</p>



<a name="166364926"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364926" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364926">(May 23 2019 at 14:21)</a>:</h4>
<p>there are several workarounds</p>



<a name="166364927"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364927" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364927">(May 23 2019 at 14:21)</a>:</h4>
<p>what should our short term response to this be?</p>



<a name="166364932"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364932" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364932">(May 23 2019 at 14:21)</a>:</h4>
<p>the OP lists them already</p>



<a name="166364940"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364940" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364940">(May 23 2019 at 14:21)</a>:</h4>
<p>yes, but for a user</p>



<a name="166364944"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364944" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364944">(May 23 2019 at 14:21)</a>:</h4>
<p>the real fix would be switching to the new mangling scheme</p>



<a name="166364948"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364948" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364948">(May 23 2019 at 14:21)</a>:</h4>
<p>are they expected to know how to deal with this?</p>



<a name="166364967"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166364967" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166364967">(May 23 2019 at 14:22)</a>:</h4>
<p>ah the new mangling scheme <em>will</em> cope with this, automatically?</p>



<a name="166365036"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365036" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365036">(May 23 2019 at 14:22)</a>:</h4>
<p>yes, the new mangling won't produce <code>.</code> chars</p>



<a name="166365045"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365045" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365045">(May 23 2019 at 14:22)</a>:</h4>
<p>even so, the new mangling scheme is a merged RFC but not implemented</p>



<a name="166365060"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365060" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365060">(May 23 2019 at 14:22)</a>:</h4>
<p>so there can be no <code>.llvm.</code> substrings in normal symbol names</p>



<a name="166365082"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365082" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365082">(May 23 2019 at 14:22)</a>:</h4>
<p>ah but there is PR <a href="https://github.com/rust-lang/rust/issues/57967" target="_blank" title="https://github.com/rust-lang/rust/issues/57967">#57967</a></p>



<a name="166365085"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365085" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365085">(May 23 2019 at 14:22)</a>:</h4>
<p>so okay</p>



<a name="166365094"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365094" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365094">(May 23 2019 at 14:22)</a>:</h4>
<p>I'd be fine with adding a runtime check for the offending substring</p>



<a name="166365121"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365121" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365121">(May 23 2019 at 14:23)</a>:</h4>
<p>and issuing a warning with link</p>



<a name="166365140"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365140" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365140">(May 23 2019 at 14:23)</a>:</h4>
<p>well</p>



<a name="166365154"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365154" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365154">(May 23 2019 at 14:23)</a>:</h4>
<p>what is likely timeline for <a href="https://github.com/rust-lang/rust/issues/57967" target="_blank" title="https://github.com/rust-lang/rust/issues/57967">#57967</a> ?</p>



<a name="166365163"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365163" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365163">(May 23 2019 at 14:23)</a>:</h4>
<p>the new mangling scheme won't be the default for a while</p>



<a name="166365177"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365177" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365177">(May 23 2019 at 14:23)</a>:</h4>
<p>there are still some performance issues</p>



<a name="166365179"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365179" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365179">(May 23 2019 at 14:23)</a>:</h4>
<p>okay then</p>



<a name="166365183"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365183" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365183">(May 23 2019 at 14:23)</a>:</h4>
<p>lets add at least a lint or something then</p>



<a name="166365196"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365196" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365196">(May 23 2019 at 14:23)</a>:</h4>
<p>and not all external tools can deal with the new scheme yet</p>



<a name="166365201"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365201" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365201">(May 23 2019 at 14:23)</a>:</h4>
<p>right? Because the results are so very bad</p>



<a name="166365251"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365251" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365251">(May 23 2019 at 14:24)</a>:</h4>
<p>when one hits this, right?</p>



<a name="166365257"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365257" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365257">(May 23 2019 at 14:24)</a>:</h4>
<p>sounds good to me</p>



<a name="166365331"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365331" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365331">(May 23 2019 at 14:24)</a>:</h4>
<p>okay</p>



<a name="166365375"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365375" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365375">(May 23 2019 at 14:25)</a>:</h4>
<p>maybe that's something <span class="user-mention" data-user-id="116107">@davidtwco</span> wants to look into? (since they are looking for something to do)</p>



<a name="166365425"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365425" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365425">(May 23 2019 at 14:25)</a>:</h4>
<p>Performance issues with the mangling scheme?</p>



<a name="166365470"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365470" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365470">(May 23 2019 at 14:26)</a>:</h4>
<p>I snatched <span class="user-mention" data-user-id="116107">@davidtwco</span>  for <a href="https://github.com/rust-lang/rust/issues/49147" target="_blank" title="https://github.com/rust-lang/rust/issues/49147">https://github.com/rust-lang/rust/issues/49147</a> already =P</p>



<a name="166365486"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365486" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365486">(May 23 2019 at 14:26)</a>:</h4>
<p>implementing a lint/warning</p>



<a name="166365489"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365489" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365489">(May 23 2019 at 14:26)</a>:</h4>
<p>I have time.</p>



<a name="166365511"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365511" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365511">(May 23 2019 at 14:26)</a>:</h4>
<p>okay. removing nominated tag from <a href="https://github.com/rust-lang/rust/issues/60925" target="_blank" title="https://github.com/rust-lang/rust/issues/60925">#60925</a></p>



<a name="166365512"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365512" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365512">(May 23 2019 at 14:26)</a>:</h4>
<p>that shouldn't take a lot of time</p>



<a name="166365548"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365548" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365548">(May 23 2019 at 14:26)</a>:</h4>
<p><span class="user-mention" data-user-id="116107">@davidtwco</span> do you have a Mac? That bug claims it only repro's there</p>



<a name="166365563"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365563" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365563">(May 23 2019 at 14:27)</a>:</h4>
<p>Oh, I do not.</p>



<a name="166365587"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365587" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365587">(May 23 2019 at 14:27)</a>:</h4>
<p>I'm pretty sure it repros on other platforms too</p>



<a name="166365591"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365591" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365591">(May 23 2019 at 14:27)</a>:</h4>
<p>okay. well maybe you can prototype and I can test. :)</p>



<a name="166365595"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365595" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365595">(May 23 2019 at 14:27)</a>:</h4>
<p>it's related to ThinLTO</p>



<a name="166365605"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365605" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365605">(May 23 2019 at 14:27)</a>:</h4>
<p>anyway lets move along</p>



<a name="166365608"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365608" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365608">(May 23 2019 at 14:27)</a>:</h4>
<p>which works the same everywhere, I think</p>



<a name="166365627"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365627" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365627">(May 23 2019 at 14:27)</a>:</h4>
<p>last P-high I-nominated issue: "forego caching cycles leads to a severe perf regression" <a href="https://github.com/rust-lang/rust/issues/60846" target="_blank" title="https://github.com/rust-lang/rust/issues/60846">#60846</a></p>



<a name="166365712"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365712" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365712">(May 23 2019 at 14:28)</a>:</h4>
<p>so we had thought that the fallout from this would be limited</p>



<a name="166365771"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365771" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365771">(May 23 2019 at 14:29)</a>:</h4>
<p>that one also makes bootstrapping the parallel compiler impossible</p>



<a name="166365777"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365777" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365777">(May 23 2019 at 14:29)</a>:</h4>
<p>though that was based in part on this comment: <a href="https://github.com/rust-lang/rust/pull/60444#issuecomment-490897465" target="_blank" title="https://github.com/rust-lang/rust/pull/60444#issuecomment-490897465">https://github.com/rust-lang/rust/pull/60444#issuecomment-490897465</a></p>



<a name="166365820"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365820" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365820">(May 23 2019 at 14:29)</a>:</h4>
<p>which said the impact was bounded by (I think) a multiplication by N, where N is the length of the cycle.</p>



<a name="166365913"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166365913" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166365913">(May 23 2019 at 14:30)</a>:</h4>
<p>maybe we are hitting such a long cycle that it manifest as a 16x slowdown end-to-end...?</p>



<a name="166366036"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366036" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366036">(May 23 2019 at 14:31)</a>:</h4>
<p>I'm guessing the best people to investigate this are probably <span class="user-mention" data-user-id="126804">@Ariel Ben-Yehuda</span> , <span class="user-mention" data-user-id="116009">@nikomatsakis</span> , or me</p>



<a name="166366098"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366098" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366098">(May 23 2019 at 14:32)</a>:</h4>
<p>(where is Ariel anyways...)</p>



<a name="166366178"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366178" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366178">(May 23 2019 at 14:33)</a>:</h4>
<p>Given the burdens that the other two already have</p>



<a name="166366184"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366184" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366184">(May 23 2019 at 14:33)</a>:</h4>
<p>I'll assign <a href="https://github.com/rust-lang/rust/issues/60846" target="_blank" title="https://github.com/rust-lang/rust/issues/60846">#60846</a> to myself</p>



<a name="166366217"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366217" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366217">(May 23 2019 at 14:33)</a>:</h4>
<p>(I doubt I'll be able to fix it on my own, but it doesn't need to take up more meeting time.)</p>



<a name="166366338"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366338" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366338">(May 23 2019 at 14:34)</a>:</h4>
<p>okay. there still remain <em>seven</em> <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+is%3Aissue+label%3AT-compiler+label%3AP-high+no%3Aassignee" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+is%3Aissue+label%3AT-compiler+label%3AP-high+no%3Aassignee">unassigned P-high issues</a></p>



<a name="166366355"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366355" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366355">(May 23 2019 at 14:35)</a>:</h4>
<p>most of them are ICE's.</p>



<a name="166366360"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366360" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366360">(May 23 2019 at 14:35)</a>:</h4>
<p>People looking for work: ICE's can be fun to fix! Really!</p>



<a name="166366395"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366395" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366395">(May 23 2019 at 14:35)</a>:</h4>
<p>/me tries to grin a little less manically</p>



<a name="166366403"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366403" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> oli <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366403">(May 23 2019 at 14:35)</a>:</h4>
<p>I know, I'm doing a fun one right now :P</p>



<a name="166366476"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366476" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366476">(May 23 2019 at 14:36)</a>:</h4>
<p>lets move along now though</p>



<a name="166366506"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366506" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366506">(May 23 2019 at 14:36)</a>:</h4>
<p>we have two <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=label%3Abeta-nominated+label%3AT-compiler" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=label%3Abeta-nominated+label%3AT-compiler">beta nominations</a></p>



<a name="166366530"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366530" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366530">(May 23 2019 at 14:36)</a>:</h4>
<p>first: "Fix ICE with inconsistent macro matchers" <a href="https://github.com/rust-lang/rust/issues/61046" target="_blank" title="https://github.com/rust-lang/rust/issues/61046">#61046</a></p>



<a name="166366578"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366578" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366578">(May 23 2019 at 14:37)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> We should give out t-shirts for people who fix ICEs that say "ICE ICE baby" =P</p>



<a name="166366614"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366614" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366614">(May 23 2019 at 14:37)</a>:</h4>
<p>/me has been hearing that joke for almost 18 years</p>



<a name="166366698"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366698" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366698">(May 23 2019 at 14:38)</a>:</h4>
<p>gotta adapt the rest of the rap to the back of the T-shirt</p>



<a name="166366776"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366776" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366776">(May 23 2019 at 14:39)</a>:</h4>
<p>huh: "I'm killin' your brain like a <a href="https://en.wikipedia.org/wiki/Rust_(fungus)" target="_blank" title="https://en.wikipedia.org/wiki/Rust_(fungus)">poisonous mushroom</a>"</p>



<a name="166366796"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366796" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366796">(May 23 2019 at 14:39)</a>:</h4>
<p>check out this fix while my rustc compiles it</p>



<a name="166366883"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366883" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366883">(May 23 2019 at 14:40)</a>:</h4>
<p>okay, anyway</p>



<a name="166366889"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366889" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366889">(May 23 2019 at 14:40)</a>:</h4>
<p>looks like <a href="https://github.com/rust-lang/rust/issues/61046" target="_blank" title="https://github.com/rust-lang/rust/issues/61046">#61046</a> is approved</p>



<a name="166366926"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366926" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366926">(May 23 2019 at 14:40)</a>:</h4>
<p>next: "debuginfo: Revert to old/more verbose behavior for -Cdebuginfo=1" <a href="https://github.com/rust-lang/rust/issues/61007" target="_blank" title="https://github.com/rust-lang/rust/issues/61007">#61007</a></p>



<a name="166366990"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166366990" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166366990">(May 23 2019 at 14:41)</a>:</h4>
<p>looks fine to me</p>



<a name="166367165"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367165" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367165">(May 23 2019 at 14:43)</a>:</h4>
<p>okay that's all the beta-nominations</p>



<a name="166367291"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367291" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367291">(May 23 2019 at 14:44)</a>:</h4>
<p>okay, <a href="https://github.com/rust-lang/rust/labels/regression-from-stable-to-beta" target="_blank" title="https://github.com/rust-lang/rust/labels/regression-from-stable-to-beta">stable-to-beta regressions</a></p>



<a name="166367297"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367297" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367297">(May 23 2019 at 14:44)</a>:</h4>
<p><a href="https://github.com/rust-lang/rust/issues/60710" target="_blank" title="https://github.com/rust-lang/rust/issues/60710">#60710</a>?</p>



<a name="166367323"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367323" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367323">(May 23 2019 at 14:44)</a>:</h4>
<p><a href="https://github.com/rust-lang/rust/issues/60710" target="_blank" title="https://github.com/rust-lang/rust/issues/60710">#60710</a> was already beta-accepted</p>



<a name="166367355"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367355" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367355">(May 23 2019 at 14:45)</a>:</h4>
<p>ah, ok</p>



<a name="166367371"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367371" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367371">(May 23 2019 at 14:45)</a>:</h4>
<p>(the link above isn't smart and doesn't filter out the beta-accepted issues; it probably should)</p>



<a name="166367389"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367389" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367389">(May 23 2019 at 14:45)</a>:</h4>
<p>for stable-to-beta regressions, we already discussed <a href="https://github.com/rust-lang/rust/issues/60989" target="_blank" title="https://github.com/rust-lang/rust/issues/60989">#60989</a></p>



<a name="166367462"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367462" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367462">(May 23 2019 at 14:46)</a>:</h4>
<p>I'm going to try to look at " Overflowing literal lint is silenced in range literals in loops on nightly" <a href="https://github.com/rust-lang/rust/issues/60459" target="_blank" title="https://github.com/rust-lang/rust/issues/60459">#60459</a></p>



<a name="166367468"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367468" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367468">(May 23 2019 at 14:46)</a>:</h4>
<p>but I won't have time to actually do so until tomorrow at the earliest</p>



<a name="166367503"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367503" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367503">(May 23 2019 at 14:46)</a>:</h4>
<p>so if anyone has free time, that bug is high-priority for the release team.</p>



<a name="166367535"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367535" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367535">(May 23 2019 at 14:47)</a>:</h4>
<p>(luckily, it is a stable-to-beta regression that <em>doesn't</em> impact the pending release.)</p>



<a name="166367553"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367553" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367553">(May 23 2019 at 14:47)</a>:</h4>
<p>and "reached the type-length limit while instantiating" <a href="https://github.com/rust-lang/rust/issues/58952" target="_blank" title="https://github.com/rust-lang/rust/issues/58952">#58952</a> is explicitly P-medium</p>



<a name="166367673"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367673" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367673">(May 23 2019 at 14:48)</a>:</h4>
<p>there are three remaining nominated items</p>



<a name="166367693"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367693" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> varkor <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367693">(May 23 2019 at 14:48)</a>:</h4>
<p>I think <span class="user-mention" data-user-id="119031">@Esteban Küber</span> had a suggestion for <a href="https://github.com/rust-lang/rust/issues/60459" target="_blank" title="https://github.com/rust-lang/rust/issues/60459">#60459</a>?</p>



<a name="166367704"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367704" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367704">(May 23 2019 at 14:48)</a>:</h4>
<p>I thought I had replied to that issue with a link to the code that needs to change... I'll post shortly, it can be a two line change for fixing this with low potential fallout</p>



<a name="166367713"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367713" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367713">(May 23 2019 at 14:48)</a>:</h4>
<p>Yeah, I was convinced I had written it in the ticket</p>



<a name="166367719"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367719" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367719">(May 23 2019 at 14:48)</a>:</h4>
<p>I'll do so now</p>



<a name="166367743"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367743" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> varkor <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367743">(May 23 2019 at 14:49)</a>:</h4>
<p>(I saw the comment on Zulip)</p>



<a name="166367750"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367750" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367750">(May 23 2019 at 14:49)</a>:</h4>
<p>PR "Allow lifetime elision in arbitrary_self_types" <a href="https://github.com/rust-lang/rust/issues/60944" target="_blank" title="https://github.com/rust-lang/rust/issues/60944">#60944</a> is nominated</p>



<a name="166367815"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367815" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367815">(May 23 2019 at 14:49)</a>:</h4>
<p>but maybe it was nominated for T-lang. <span class="user-mention" data-user-id="126931">@centril</span> can you maybe try to leave comments when you nominate?</p>



<a name="166367877"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367877" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367877">(May 23 2019 at 14:50)</a>:</h4>
<p>yeah sure</p>



<a name="166367888"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367888" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367888">(May 23 2019 at 14:50)</a>:</h4>
<p>it was for t-lang</p>



<a name="166367924"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367924" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367924">(May 23 2019 at 14:50)</a>:</h4>
<p>(just to provide more context for the discussion you expect to occur when you nominate; even when only one team is tagged)</p>



<a name="166367934"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367934" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367934">(May 23 2019 at 14:50)</a>:</h4>
<p>thanks</p>



<a name="166367962"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367962" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367962">(May 23 2019 at 14:50)</a>:</h4>
<p>"crater run to estimate impact of full NLL transition" <a href="https://github.com/rust-lang/rust/issues/60680" target="_blank" title="https://github.com/rust-lang/rust/issues/60680">#60680</a> is nominated but I think that's leftover</p>



<a name="166367985"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367985" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367985">(May 23 2019 at 14:51)</a>:</h4>
<p>or wait  it was renominated, never mind</p>



<a name="166367987"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367987" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367987">(May 23 2019 at 14:51)</a>:</h4>
<p>no =P</p>



<a name="166367994"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166367994" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166367994">(May 23 2019 at 14:51)</a>:</h4>
<p>(again for lang team, and maybe eventually compiler team)</p>



<a name="166368021"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368021" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368021">(May 23 2019 at 14:51)</a>:</h4>
<p>last: "Panics in destructors can cause the return value to be leaked" <a href="https://github.com/rust-lang/rust/issues/47949" target="_blank" title="https://github.com/rust-lang/rust/issues/47949">#47949</a></p>



<a name="166368027"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368027" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368027">(May 23 2019 at 14:51)</a>:</h4>
<p>I did leave a comment this time around :D</p>



<a name="166368099"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368099" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368099">(May 23 2019 at 14:52)</a>:</h4>
<blockquote>
<p>last: "Panics in destructors can cause the return value to be leaked" <a href="https://github.com/rust-lang/rust/issues/47949" target="_blank" title="https://github.com/rust-lang/rust/issues/47949">#47949</a></p>
</blockquote>
<p><span class="user-mention" data-user-id="116118">@Matthew Jasper</span> , I think there's some followup questions to your post here?</p>



<a name="166368144"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368144" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368144">(May 23 2019 at 14:52)</a>:</h4>
<p>but also: should this remain P-medium? Or is it higher priority to fix?</p>



<a name="166368165"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368165" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368165">(May 23 2019 at 14:53)</a>:</h4>
<p>I suspect, as a long-standing bug, it can probably remain P-medium</p>



<a name="166368178"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368178" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368178">(May 23 2019 at 14:53)</a>:</h4>
<p>Okay</p>



<a name="166368190"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368190" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368190">(May 23 2019 at 14:53)</a>:</h4>
<p>Next up, <span class="user-mention" data-user-id="124287">@mw</span> , you get a chance to fill us in with a WG-pgo checkin!</p>



<a name="166368194"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368194" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368194">(May 23 2019 at 14:53)</a>:</h4>
<p>sure</p>



<a name="166368199"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368199" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368199">(May 23 2019 at 14:53)</a>:</h4>
<p>with a whopping seven minutes to do it in</p>



<a name="166368206"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368206" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368206">(May 23 2019 at 14:54)</a>:</h4>
<p>As a reminder: PGO stands for Profile Guided Optimization and is an advanced optimization technique offered by most mature compiler toolchains.</p>



<a name="166368264"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368264" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368264">(May 23 2019 at 14:54)</a>:</h4>
<p>It tries to facilitate more intelligent optimization decisions by taking information about a programs runtime behavior into account.</p>



<a name="166368278"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368278" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368278">(May 23 2019 at 14:54)</a>:</h4>
<p>The main update for the "working group" is that PGO support is basically done <span aria-label="tada" class="emoji emoji-1f389" role="img" title="tada">:tada:</span></p>



<a name="166368301"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368301" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368301">(May 23 2019 at 14:54)</a>:</h4>
<p>working group is in quotes, because it's just me <code>:)</code></p>



<a name="166368315"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368315" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368315">(May 23 2019 at 14:55)</a>:</h4>
<p>I'll be putting the feature's stabilization to a vote for y'all soon.</p>



<a name="166368331"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368331" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368331">(May 23 2019 at 14:55)</a>:</h4>
<p>There is a tracking issue that lists the things that still need to be done before stabilization here:</p>



<a name="166368339"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368339" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368339">(May 23 2019 at 14:55)</a>:</h4>
<p><a href="https://github.com/rust-lang/rust/issues/59913" target="_blank" title="https://github.com/rust-lang/rust/issues/59913">https://github.com/rust-lang/rust/issues/59913</a></p>



<a name="166368351"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368351" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368351">(May 23 2019 at 14:55)</a>:</h4>
<p>What's left to do is basically documenting the commandline flags and moving them from <code>-Z</code> to <code>-C</code>.</p>



<a name="166368366"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368366" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368366">(May 23 2019 at 14:55)</a>:</h4>
<p>There's already is documentation on how PGO is implemented in rustc in the guide:<br>
<span aria-label="+1" class="emoji emoji-1f44d" role="img" title="+1">:+1:</span> <a href="https://rust-lang.github.io/rustc-guide/profile-guided-optimization.html" target="_blank" title="https://rust-lang.github.io/rustc-guide/profile-guided-optimization.html">https://rust-lang.github.io/rustc-guide/profile-guided-optimization.html</a> <span aria-label="+1" class="emoji emoji-1f44d" role="img" title="+1">:+1:</span></p>



<a name="166368378"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368378" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368378">(May 23 2019 at 14:55)</a>:</h4>
<p>I'd also like to do some more testing of this via using it for Firefox. Also, this is pretty much ready for being tried out by anybody whose interested.</p>



<a name="166368382"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368382" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368382">(May 23 2019 at 14:56)</a>:</h4>
<p><span class="user-mention" data-user-id="116015">@Alex Crichton</span> also suggested writing a cargo subcommand that would do this mostly transparently, which sounds awesome <span aria-label="heart eyes" class="emoji emoji-1f60d" role="img" title="heart eyes">:heart_eyes:</span></p>



<a name="166368473"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368473" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368473">(May 23 2019 at 14:56)</a>:</h4>
<p>that's pretty much it from me</p>



<a name="166368483"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368483" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368483">(May 23 2019 at 14:56)</a>:</h4>
<p>would be awesome to try out if this could speed up the compiler</p>



<a name="166368500"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368500" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368500">(May 23 2019 at 14:57)</a>:</h4>
<p>but that would be non-trivial to integrate into our CI, I think</p>



<a name="166368540"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368540" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368540">(May 23 2019 at 14:57)</a>:</h4>
<p>okay that's great</p>



<a name="166368541"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166368541" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166368541">(May 23 2019 at 14:57)</a>:</h4>
<p>there, I did it in 4 minutes, <span class="user-mention" data-user-id="116083">@pnkfelix</span>  <code>:)</code></p>



<a name="166369203"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166369203" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166369203">(May 23 2019 at 15:03)</a>:</h4>
<p>Thanks to everyone in <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span> for attending!</p>



<a name="166369269"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166369269" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166369269">(May 23 2019 at 15:04)</a>:</h4>
<p>Hope to see many of you at the steering meeting tomorrow</p>



<a name="166369273"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166369273" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166369273">(May 23 2019 at 15:04)</a>:</h4>
<p>where the topic will be ...</p>



<a name="166369281"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166369281" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166369281">(May 23 2019 at 15:04)</a>:</h4>
<p>/me consults notes</p>



<a name="166369306"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166369306" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166369306">(May 23 2019 at 15:04)</a>:</h4>
<p>hmm</p>



<a name="166369311"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166369311" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166369311">(May 23 2019 at 15:04)</a>:</h4>
<p>no meeting scheduled?</p>



<a name="166369337"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166369337" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166369337">(May 23 2019 at 15:05)</a>:</h4>
<p>is there a holiday or something? What happened here: <a href="https://github.com/rust-lang/compiler-team/#steering-meeting" target="_blank" title="https://github.com/rust-lang/compiler-team/#steering-meeting">https://github.com/rust-lang/compiler-team/#steering-meeting</a></p>



<a name="166369390"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166369390" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166369390">(May 23 2019 at 15:05)</a>:</h4>
<p>I think we decided not to do one, since Niko can't attend</p>



<a name="166369404"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166369404" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166369404">(May 23 2019 at 15:05)</a>:</h4>
<p>Ah</p>



<a name="166369415"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166369415" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166369415">(May 23 2019 at 15:05)</a>:</h4>
<p>that makes a lot of sense, okay.</p>



<a name="166369481"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166369481" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166369481">(May 23 2019 at 15:06)</a>:</h4>
<p>In that case: I hope to see <em>none</em> of you in 24 hours</p>



<a name="166369500"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166369500" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166369500">(May 23 2019 at 15:06)</a>:</h4>
<p>lets all enjoy the weekend instead</p>



<a name="166369506"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166369506" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166369506">(May 23 2019 at 15:06)</a>:</h4>
<p>(and the release, right?)</p>



<a name="166369627"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166369627" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166369627">(May 23 2019 at 15:07)</a>:</h4>
<p>May the release be speedy and free of errors</p>



<a name="166382898"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166382898" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166382898">(May 23 2019 at 17:43)</a>:</h4>
<p>oh good thing about the steering meeting, since I still have nothing prepared aaaaa</p>



<a name="166382966"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166382966" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166382966">(May 23 2019 at 17:44)</a>:</h4>
<p><span class="user-mention" data-user-id="116107">@davidtwco</span> <span class="user-mention" data-user-id="124287">@mw</span>  btw, I don't like the lint idea :P &lt;<a href="https://github.com/rust-lang/rust/issues/60925#issuecomment-495316206" target="_blank" title="https://github.com/rust-lang/rust/issues/60925#issuecomment-495316206">https://github.com/rust-lang/rust/issues/60925#issuecomment-495316206</a>&gt;</p>



<a name="166383022"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166383022" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166383022">(May 23 2019 at 17:44)</a>:</h4>
<p>I saw your comment. I’m happy to implement another solution if you and/or <span class="user-mention" data-user-id="124287">@mw</span> have a better idea?</p>



<a name="166383063"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166383063" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166383063">(May 23 2019 at 17:45)</a>:</h4>
<p>my idea is in that comment :P</p>



<a name="166383170"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166383170" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166383170">(May 23 2019 at 17:46)</a>:</h4>
<p><a href="https://github.com/rust-lang/rust/blob/master/src/librustc_codegen_utils/symbol_names.rs#L596" target="_blank" title="https://github.com/rust-lang/rust/blob/master/src/librustc_codegen_utils/symbol_names.rs#L596">https://github.com/rust-lang/rust/blob/master/src/librustc_codegen_utils/symbol_names.rs#L596</a></p>



<a name="166383206"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166383206" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166383206">(May 23 2019 at 17:47)</a>:</h4>
<p>I guess it's be easier to check for <code>temp_buf.ends_with(".llv")</code> when you hit an <code>m</code> :P</p>



<a name="166383279"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166383279" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166383279">(May 23 2019 at 17:48)</a>:</h4>
<p>I can experiment with doing that.</p>



<a name="166437505"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-05-23%20%2354818/near/166437505" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-05-23.20.2354818.html#166437505">(May 24 2019 at 09:46)</a>:</h4>
<p>I'm fine with that</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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